Circuit for coin-collectors.



110.850.3 19. PATENTED APR. 16, 1907 H. M. GRANE. CIRCUIT FOR 00m COLLECTORS.

APPLICATION FILED FEB. 13, 190B.

MIMI

Ian)- JZQWM' UNITE l") STATES 'PALE'NT OFFICE.

l-IENR Y M. OltANlt, Ob N EW YORK, N. Y., ASSIGNOlt TO WESTERN ELECTRIC COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

CIRCUIT FOR oom-oorrsoro'ns'.

flnnlioatinn filed February Specification of Letters Patent.

13, 1906. Serial to. 300.928.

Patented April 16,1907.

To ctM whom [it 'lrtmy concern.-

Be it known that I, HENRY M. CRANE, a citizen of thc'Unitcd States, residing at New York, in the county of New York and State of New York, have invented a certain new and useful Improvement in Circuits for Coin-- Collectors, of which the following is a full, clear, concise, and exact description.

My invention relates to a coin-collecting telephone system; and its object is to provide an improved arrangement of the coin-controlled circuit for coin-collectors wherethe deposit of one or more coins may be required.

My invention provides simple means for testing to determine whether the subscriber has deposited the coins required of him and also means for enabling the operator at the central oll'ice to refund the coin or coins or deposit them in the carh box without aid from the subscriber.

In my invention the branch circuit, which includes the' usual coin-operating magnet, also includes a high resistance in series with a relay which controls a short circuit about said resistance. A normally closed short circuit about both the resistance and the relay has contacts controlled by a coin. (leposited. in the coin-receivingapparatus.

I will describe my invention more particu larly by reference to the accompanying drawing, which is a diagrammatic view showing.

a telephone system embodying my invention and illustrating b conventional symbols the apparatus at a su scribers station and at the central office. l

The cord and hue clrcuit in connection with which I have illustrated my invention are of well-known types, and hence a detailed description thereof is unnecessary 1,

Referring to the drawing, the branch circuit g to ground iromthe tip side of the line includes the usual polarized magnet M for contrl'alling the disposal of a coin or coins 1 2, deposited by the subscr ber in lns coin-receiving ap aratus. A'non-1n(luct1ve-res1stancc 1; am a relay 6 are in series with the' magnet M. The resistance 0 is of' sufilcient value to prevent the operation of relay b o'r.

the relay 0 in the cord-circuit when included incircuit with said relays and the common central o'l'lice battery. The branch circuit which is g-is normally open at.contac t a, adapted tobe closed by the corn 1. A normal y closed short circuit of both resistance c and. relay bis adapted to be opened at con'- 2. A. normally open short circuit of resist ance calone is controlledby'the relay b.

The operation of the system'is as follows: A subscriber desiringa connection deposits a coin 1 in the coin-receiving apparatus, 'thereby closing contact, a. A'circuit is thus completed tronngrodnd at the sub s criberfs tact a thcrem by the filfipOSlt of a second coin station through contact 'a, 'the short circuit of relay l), and resistance c, norn1ally closed at contact (1, magnet M, the'tip side of the line,

relayf, battery 13 to ground at the central station. The relayfo crates its armature to close a local circuit, inc uding lamp L or other signal at the central o'liice. The operator observing the signal at the cei'itral office inserts:

her answering-plug n in the spring-jack o and ascertains the subscribers wishes in the usual In case the dc osit of a second coin required of the ca lingsubscriber my invei1--:'

tion' provides simple means for testing for said coin. Thed'e'po'sit of coin 2 opens nconstact ll.

.at the central station through batter branch-g to groun short circuit thereof being open at (1. mg to the high resistance 0 suflicient current does not flow through the line to o crate 'reisnot Moreover, current from batteryB, owing to the resistances, is'insufiicient to enlay e, and hence the test-lamp. lighted.

ergizc relay 5 to. attract its armature-0'10 close the short .circuit about resistance c. The fact that the lamp Lfis not lighted when the test-key 7c is operated indicatesto the operator that the second coinhas been depositcd. If the second coin has not been deposited when. the test-key is operated,- the re- Hence when the operator actuates sistance c is sl'iort-cirouited through contact d, and sulljcient current lay e to close the circuito the test-lamp, the

lighting of said lamp indicating that a sec ond coin has not been de' osited.

When the operator wis res to deposit or re asses through re-' TOO fund the coins, she does so in the 'usual manner by 0 crating key 9 or k, sending a highvoltage irect current from battery -g' or h, respectively, over the branch line g.- The relay 1; is thereupon operated and closes at contact b the short circuit about resistance iterated to said telephone line,

0,, thereby allowing the coin-controlling magnet M. to receive sullicicnt current to operate in the usual manner the mechanism for dis posing of the coin.

Having thus described my invention, clai1n- 1. The combination with a signaling-cincuit including ,ani l n.licat ng device, of normally open contacts iwsaid' circuit ada ted to be closed by 9.00111 to actuate the indicating device, an electroinagnctically-opcratcd test si nalmg device adapted to be connected to seiz circuit, a resistance in the circuit rendering said signaling, device inoperative, and a short circuit of said resistance having coincoirtrolled contacts. I

2. The combination with a signaling-circuit including an indicating, device, of normally open contacts in said circuit adapted to be closed by a coin to actuate the indicating device, an electroniagnctically-opin'atcd test-signaling device adapted to beconnectod to said circuit, a resistance in the circuit rcndering said signaling device inoperative, and a short circuit of said resistance having .normally closed contacts adapted to he opened byacom. g

3. The combination with a telephone-line extending from a subscribers station to a central oilice, of a, coin-receiving apparatus at the subscribers station, a branch circuit of said telephdnedine including an electro- Inagnet for'controlling'the disposal ofcoin deposited in'the coin-rec g apparatus, an

eleetromagnctically-o vice included in a cue apted to,bc concreslstence in said test-signal said. res stance v rendering v short circuit of having .'.oin controlled contacts, an additional short circuit of said I'esistancehaving normally open contacts, a relay inthe branch circuit controlling said short circuit, said rclay being nnres mnsivc to signaling-curler]ts, and means at the central oilicc for impress in;. upon the telephone-line current which will operate said relay to short-circuit said resistance, thereby removing said resistance froin the circuit of said coin-controlling, ma; net. i

"4. In a telephone system, the combination with e signaling-(nrcuit extending from a snhscribers station to 'a-ccntral oilice, of an indicating device included in said circuit, a coin-receiving a paratus atthe snbscrihcfis station, normal y 0 en contacts in said circuit adapted to be 0. Used by a coin to actuate the indicating d cviee, an electron]agneticaliy operated test-signaling device adapted to be connected to said circuit, a resistance in the circuit rendering said signaliin; device inc erative, it'short circuit of said resistance having coin-controlled contacts, an ciectromngnet for controlling the disposal (if coin deposited inv said coin-rcccivin; apparatus, a relay in the signaling-circuit,.a short circuit of said. resistance controlled by said relay, and means at the central oilice for impressing upon the circuit current which will opcrate said relay to cut oht said resistance from the circuitof the coin-controlling magnet.

In witness whereof I hereunto subscribe my name this 29thf day of January, A. D.

l 1906. v HENRY M. ORAN a,

I I Witnesses:

HUBER? VVin'rE, J1 Green-en 1G. Mari-inn. 

